Body raising and lowering mechanism for wagons



l J. SASSI-1R. BDY RAISING AN'D LOWERING MECHANISM FOR WAGONS.

APPLICATION FILED OCT. 12; 1,920.

' Lmzh Patented Apr. u, 1922.

2 SHEETS- SHEET l.

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I. GASSER.

BODY RAISING AND LOWERING MECHANISIVI FOR WAGONS.

IAIQ,

APPLICATION FILED 061.12. 1920 Patented Apr. III, 1922.

2 SHEETS-SHEET 2.

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INVENTOR ATTORNEY @kJ/M @ATWT @FFHQEM JOSEPH GASSER, 0F TRENTON, NEW JERSEY.

Specification of Letters Patent.

retreated apr. ii, i922,

Application :filed October l2, 1920. Serial No. 416,451.

T0 all whomc't may concern.' n

Be it known that I, JosEPH Gassnn, a citi- Zen of theUnited States, residing' at Trenton, in the county of Mercer and State of New Jersey, have invented new and useful Improvements in Body Raising and Lowering Mechanism for Wagons, of which the following is a specification.

This invention relates to wagons, trucks and the like and it has more particular reference to means for raising and lowering the body portions thereof into inclined or dumping position and vice versa.

The main object of my present invention is to provide a body raising and lowering mechanism for commercial vehicles or motor trucks having dumping or tiltable bodies.

Another object of'this invention is to provide a body raising and lowering mecha- .nism of the type referred to which is operated by the motor drive shaft, said mechanism being of simple construction, easily installed, cheap to manufacture, and very effective in operation.

With these and other minor objects in view as will llater on be more apparent as the description proceeds, my invention consists essentially in the novel features of 'conl struction, combination and arrangement of parts hereinafter fully described and more specifically defined by the appended claims.

In the further disclosure of the invention, reference is to be had to the accompanying sheets of explanatory drawings constituting a part of this specification wherein like characters of reference designatey the same or corresponding `parts in all the views.

Figure 1a is a side elevation of a 'motor driven wagon having my inventionv applied thereto, the body or dump box being shown in inclined position and parts of the body and chassis broken away to better disclose the underlying structures.

Figure 2- is a plan of the same.

Figure 3- is a side elevation of the wagon with parts broken away or in section and showing the body or dump box in normal position. Y

Figure 4- is an enlarged transverse sectional detail showing the body or dump box raising and lowering mechanism and the means for supporting same relative to the truck chassis; and

Figure 5*- is a longitudinal elevation of thesamei i In the drawings, the invention is shown as adapted more specificallyv to a motor propelled dumping wagon wherein the numeral 10 designates the chassis, 11 the wheels, 12 the engine or motor and 13 the steering mechanism. Mounted on the aforesaid chas lsis is a substantially rertangular frame 14 of channel or other appropriate section material, and comprising side members 15 and end members 16 suitably braced and connected at the meeting points. Supported in spaced relation to the. side members 15 and on the inner faces thereof as by brackets 17, are guides or rails 18, the upper and lower edges whereof are fashioned as shown clearly in Figure 4, to constitute track-ways for anti-friction rollers 19 appropriatelyv mounted on stub axles 2O projecting laterally from plate members 21 rigidly secured to or integral with threaded blocks or nuts 22. Pivotally connected to these blocks or nuts and on the inner faces thereof as by studs or pintles 23, are a pair of spaced forward arms'24, the upper ends whereof are pivoted on a cross bar or shaft 25 mounted in an appropriate channel frame or the like 26 secured beneath the underside of the body or dump box 27.4 J ournaled on bearing bosses 28 on the inner faces of the side members 15 and preferably near the rear end thereof are a plurality of opposed or rear arms 29 which are pivctally connectedfscissor fashion-at SO tothe aforesaid forward arms 24 and at their upper ends these rear arms 29 are hingedly connected by short links 31 to the underside of the frame 26. Newby reference to Figures 1 and 3 it will be readily seen that the front and rear bars or arms 24, 29, and links 31 constitute what may be termed a lazy-'tong movement for vra-isingthe body or dump box 27 from its normal position to an inclined one for dumping.

Mounted in ball or roller bearings 32 in end brackets 33 integral with or adjoining the endsof each'rail 18 is a screw threaded rod or shaft 34 on which are adapted to be traversed the aforesaid blocks or nuts 22,

or shaft 34,-is a miter gear 36 in mesh with closure;

a corresponding gear 37 on a cross shaft carried in appropriate bearings 39 in th frame 14;, and it will therefore be appare that by rotating the shaft the gears T57, will actuate the gears 37 to rotate the screw threaded rods or shafts 34 and thereby traverse the blocks or nuts 22 either in a, rearward or forward direction thereoven Centrally of the cross shaft 38, lprovide a worm wheel l0 in gear with and adapted for rotation by means of a worin gear All on the motor drive shaft 4t2, and it will be readily understood, that any appropriate clutch mechanism may be fitted in conjunction therewith so that the raising' and lower-- ing mechanism need only be actuated as and when desired.

In order to provide an effective means for preventing dust and dirt from fouling the aforesaid screw threaded rods or shafts 34, I preferably mount thereoverA inverted channelshaped coversd of sheet metal or the like and which can be readily removed or fixed in place whenever requisite.

Now by reference to the views, it will be clearly apparent that when the body or Y dump boxv 27 Vis resting in the `normal posi-l tion upon the frame 26', and it is desired to raise and tilt said body or box 27v to empty the contents thereof, that said operation can be promptly effected by throwing in the clutch which couples up the worin. gea-r Lil'to the motor shaft 4t2 'which will result in rotation of the cross shaft 38 which ofV necessity causes the screw threaded shafts or rods 34; to rotate under the action of the gears 37, 36. This rotation of the rods 34v will'cause the blocks or nuts 22 to be traversed thereover, and, when so moved rearwardly relative to the truck body will bring` about a raising of the front and rear arms 2li, 29, respectively and thereby cause al tilting action to be 'given' the "body or dump boX 27'. Furthermore it to be particularly noted that as the body or dump boi; 27 approaches its limit of upward movement or elevation that the links Si will be rearw rdly inclined relative 'to their pivotal. points 4rd on the rear ariiis 29 and thereby tend to further raise the forward end of the body or dump box 27 and thusreifectively ensuring the proper gravitationofall the contents therefrom. 7 The rear end of the body or dump box is or maybe provided with the customary chute linden-the control an appropriate Obviously a reversal of the motor `drive shaft' 42 will resultin the return of the bfody or dump box' 27 tolits normal position' as shown` in Figure Sp Whilst l have described and shown my invention as moreparticularly applicable for motor-- driven vehicles iti-s to be understood that l? do Inot limit. myself-l tlni'ereton Furthermore it will. be readily seen that by my invention lrprovide an extremely simple Vand Veicfective raisimgV and lowering mechanism for bodies or dump boxes of any type of dumping vehicles, one that lifts to a maximum height and is readily collapsed or folded into a comparatively small space when in lowered position with nothing projecting beneath the supporting frame, and finally l wish it vclearly understood that do not confine myself to the yprecise structure and details shown and described.

@ne of the adyantages ofthe construction illustratedis that the'means forv supporting and guiding the plates' 2i carrying blocks 22 insures the .proper 'operation of the device, since unequal vor wrenching strains on the blocks, iii a transversedirection, are practically eliminated, so far as any resulting harm is concernechand a con'- siderable port-ion of the weight of the load is taken off-the screws.I

Having described my invention what l claim as newand useful is ln a body raising and lowering mechanism for vehicles, the combinationnof a supporting frame and a body portion, longitudinally disposed tracks'earriedin saidsupporting frame, screw rods journaled in spaced relation to saidr tracks, blocks threaded: on said screw rods means for guiding,

the blocks and preventing'deflection due to unequal twisting strains, said meansincluding pl ate members supporting theblocks and slidablealong the sides of the tracks and rollers journaled. on the plat'efmembers for engaging'- the upper and lower portions of the tracks., the axes offtherollers eX- tendinoj ransversely of the vfiat surfaces-of the plates,` a toggle frame interposed bectween' the support-ing; frame andy the'loodyportion, said toggle frame. comprising forward arms, pivota'lly connected tol the screw threaded blocksand rearward arms jour-- naled on the supporting` frame.r and means for rotating; the screw rods wherebyv the toggle frame .is elevated or'lowered."

2. In a body raising and lowering/mechanism for vehicles the combination of a-sup'- porting VVframe and body porti0n, longitudinally. disposed tracks carried by .said supporting` VVframe, anti-frictionallyi mounted screw rods having thrust bearings jeun; naled inl spaced relation longitudinally of said tracks, the blocks threaded on` said screw rods means for `guia-lingthe blocksand preventing deflection due. to unequal` twisting strains, said means including plate membersy supportingthe blocksl and Y slid'able along` the sides of the tracks andt rollers journale'd on the plate members for engaging the upper and lower portions ofthe tracks, the axes of the rollers"v extending transverselyof` thelflat surfaces of the plates,

toggle frame interposed between the supporting frame and the body portion, `said toggle frame comprising forward. arms pirotall;v connected to the screw threaded blocks and rearward arms journaled in the supporting frame, a covering shield disposed over each of the aforesaid screw rods, and means for rotating the screw rods whereby the toggle frame is elevated or lowered.

3. ln a body raising and lowering' mechanism for a motor vehicle including` a drive shaft, the combination of a supporting frame and body portion, longitudinally disposed tracks carried by said supporting frame, anti-frictionally mounted screw rods having thrust bearings journaled in spaced relation longitudinally of said tracks, the blocks threaded on said screw rods and supported by anti-friction rollers on the tracks,

relieving the blocks and screw rods in part of the weightof the body, a toggle frame interposed between the supporting` frame and the body portion, said toggle frame comprising forward arms pivotally connected to the screw threaded blocks and rearward arms jonrnaled in the supporting frame, a covering shield disposed over the aforesaid screw rods, pivoted links on the forward ends or" the rear arms for tilting the body portion when raised, a worm shaft disposed trans versely relative to the screw rods, spur gearing adapted to rotate said worm shaft, and screw rods in both directions, and 'means for operating the worm shaft direct from the motor drive shaft.

In testimony whereof I affix my signature.

JOSEPH eastsnn. 

